I can't figure out how to put a link in my reply but there is a thread called "Sabrina leather care" started by gabz. If you do a search you should find it. I hope you can fix your bag! :)

What a shame! Love that color.
Back when the Sabrinas and Juliannes were at the outlets, I saw a few with the same marks from the handles. I thought at the time that it was caused by the sealant on the handles reacting to the dye of the bag.

Try the Apple, or the Coach conditioner, what do you have to lose now?

I am so upset. I was holding on to it because I loved it so much. I never once carried it in the rain or anything. I had a Vera Bradley that i referred to as my "rain bag." Figures that it would get messed up sitting in my closet stuffed and in the dust bag in a box. I am thinking of bringing her to my FP to see what they say. DH seems to think they'll do something.